The encrypted volume has no specific header or identifying parameters and a virtual TrueCrypt volume file does not have a particular extension. There is nothing to differentiate an encrypted TrueCrypt volume from regular data. In case the correct password is not provided, data on the encrypted volume is not distinguishable from the random data. It uses encryption algorithms such as 256- bit AES, Serpent, Twofish or cascaded combination of the these and hash algorithms such as Whirlpool, RIPEMD- 160, SHA-1. TrueCrypt works by creating encrypted volumes either from an entire physical drive or a partition or by converting a single user file into an encrypted virtual disk. files and folder names and the contents of each file, Meta data as well as the free space become encrypted. TrueCrypt does not allow any data on the encrypted volume to be accessed decrypted without providing the correct password or keyfile(s) or combination of both. This process of ciphering/ deciphering in chunks is called on-the-fly encryption/decryption and it works for all file types.Ĭontinue reading on Continued From While this portion is being played, the media player begins loading next small portion of the video file from the TrueCrypt-encrypted volume to RAM and the process repeats. The decrypted portion of the video (stored in RAM) is then played by the media player. While the portion is being loaded, TrueCrypt is automatically decrypting it in RAM. The media player then begins loading a small initial portion of the video file from the TrueCrypt-encrypted volume to RAM (memory) in order to play it. When the user opens the video file, the OS launches the application associated with the file type – typically a media player. The user provides the correct password (and/or keyfile) and opens the TrueCrypt volume. avi video file stored on a TrueCrypt volume. No extra memory is required for TrueCrypt. This does not mean that the whole file that is to be encrypted/ decrypted must be stored in RAM before it can be converted. On- the- fly encryption means that data is automatically encrypted/ decrypted before it is loaded or saved in the memory without the need of any user intervention. Truecrypt is meant for establishing and keeping an on- the- fly encrypted data storage device. its C++ implementation is also available to everyone and liable to change. it’s available free of cost and open- source i.e. This solution is provided by TrueCrypt which is free i.e. To overcome these limitations of the built- in encryption techniques effectively and to save all type of ‘data at rest’, a third- party solution is required. It saves only the data on the system’s hard disk but it doesn’t protect the data on auxiliary/ removable drives. It’s an on- the- fly encryption system that encrypts the system disk (including all user files) as well as OS executables and boot files. This kind of encryption fails at places where the entire contents of the disk need to be encrypted. NTFS encryption is also supported by all versions of Windows XP/2000 but its limited capability to encrypt only at the file- level is a great drawback. Windows Vista (business as well as ultimate edition) has two built-in disk- encryption features. Why is TrueCrypt Most Suitable for Windows Vista? It is compatible with all OS including Windows Vista/ XP, Mac OS X and Linux. TrueCrypt is software that encrypts data at rest (be it the data on hard disk or removable storage devices). data being transferred via networks such as internet, mobile phones, ATM’s, Bluetooth devices etc.ĭata in transit can also be intercepted since it is extremely difficult to physically secure access to all networks, so its encryption is also mandatory. Encryption is definitely required in such scenarios if physical security measures fail.Ģ. There have been numerous incidents where confidential data such as personal records on disks have been exposed through loss or theft of laptops and backup drives. Data at rest, such as files on a hard disk or USB flash drives, operating system data, etc.There are two kinds of data on which encryption processes can be applied. converting the encrypted information back into a readable state. The consequence of the procedure is encrypted information and its reverse process is known as decryption, i.e. According to Wikipedia, encryption is the process of transforming information using an algorithm to an unreadable form accessible only to those who possess the security keys. Encryption (as well as decryption) falls in the domain of cryptographic technology. TrueCrypt is a free, open-source disk encryption software application.
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